Results 41 to 50 of about 71,926 (343)

Permeation Enhancer in Microemulsions and Microemulsion-Based Gels: A Comparison of Diethylene Glycol Monoethyl Ether and Oleyl Alcohol

open access: yesGels
Microemulsions have been commonly used with various permeation enhancers to improve permeability through the skin. The purpose of this study was to compare the release and permeation ability of two commonly used permeation enhancers—diethylene glycol ...
Sujata Pandey, Gabriella Baki
doaj   +1 more source

Effects of molecular weight on the optical and electrochemical properties of EDOT-based π-conjugated polymers

open access: yesScientific Reports, 2017
Absolute molecular weight values obtained by gel permeation chromatography with multi angle light scattering of PEDOTF8 were approximately 65% of the relative molecular weight values obtained by gel permeation chromatography using polystyrene standards ...
Shotaro Hayashi   +2 more
doaj   +1 more source

Extraction and purification of lipoteichoic acid from group A Streptococcus and its antitumor activity

open access: yes浙江大学学报. 农业与生命科学版, 2010
To evaluate the antitumor activity of group A streptococcal lipoteichoic acid (LTA), LTA was extracted and purified by gel permeation chromatography (GPC) from group A Streptococcus, and its molecular structure was analyzed by gas chromatography and ...
BAI Ying   +3 more
doaj   +1 more source

Determination of Δ9 -tetrahydrocannabinol in hempseed oils by gel permeation chromatograph-high performance liquid chromatography method

open access: yesZhongguo shipin weisheng zazhi, 2021
Objective A method for determination of Δ9-tetrahydrocannabinol(Δ9-THC) in hempseed oil by gel permeation chromatograph-high performance liquid chromatography(GPC-HPLC) method was developed.
Lilin WU   +4 more
doaj   +1 more source

A comparative study of an aminopeptidase from lactic acid bacteria: a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Biochemistry at Massey University [PDF]

open access: yes, 1992
Aminopeptidase enzymes from the proteolytic systems of S.salivarius subsp.thermophilus Lactococcus lactis subsp.cremoris and Lactococcus lactis subsp.lactis have been investigated.
Midwinter, Robyn Gillian
core  

Improved Lignin Polyurethane Properties with Lewis Acid Treatment [PDF]

open access: yes, 2012
Chemical modification strategies to improve the mechanical properties of lignin-based polyurethanes are presented. We hypothesized that treatment of lignin with Lewis acids would increase the concentration of hydroxyl groups available to react with ...
Chung, Hoyong, Washburn, Newell R.
core   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin   +7 more
wiley   +1 more source

Photo‐Switching Thermal and Lithium‐Ion Conductivity in Azobenzene Polymers

open access: yesAdvanced Functional Materials, EarlyView.
Light‐responsive azobenzene polymers control thermal and ionic transport simultaneously through structural transitions. UV illumination disrupts π–π stacking, converting crystalline trans states to amorphous cis configurations. Thermal conductivity drops from 0.45 to 0.15 W·m−1·K−1 while Li+ diffusivity increases 100 fold. This dual transport switching
Jaeuk Sung   +7 more
wiley   +1 more source

Crude oil sorbent based on cellulose nanofibrils-methacrylate grafted copolymers [PDF]

open access: yesBIO Web of Conferences
Hydrophobic composites of cellulose nanofibrils (CNF) with acrylic polymers are obtained by methyl methacrylate (MMA) and butyl methacrylate (BMA) polymerization in Pickering emulsion, stabilized with cellulose nanofibrils. Successful modification of CNF
Grechishcheva Natalya   +7 more
doaj   +1 more source

4D Printing of Self‐Immolative Polymers

open access: yesAdvanced Functional Materials, EarlyView.
The integration of self‐immolative polymers (SIPs) into light‐based 3D printed structures is presented as a new “living” 4D printing strategy. By exploiting their metastability and stimuli‐responsiveness, SIP‐containing printed objects can undergo rapid and triggered degrowth under ambient conditions and subsequent regrowth through polymer ...
Johannes Markhart   +3 more
wiley   +1 more source

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